Characteristics of active speakers and passive speakers

                         Characteristics of active speakers and passive speakers

Active speakers, that is, from the outside, do not need external power amplifier drivers, and do not need speaker cables. In fact, the post-stage power amplifier is built into the box, and the power cord is directly inserted into the back of the speaker. Through a pre-stage input signal, you can enjoy charming music. Compared with ordinary speakers, it saves a lot of links. On the ground, it is much fresher and more convenient to operate, so now more and more HIFI manufacturers like to produce active speakers, and the appearance is more beautiful, more modern, leading the fashion trend, making HIFI younger . Since active speakers have so many advantages, why are there still people making conventional speakers? Moreover, it still occupies a dominant position in the current market. Why is this? Let's talk about regular speakers first.

Conventional speakers are called passive speakers, that is, an external power amplifier is required to drive the pair of speakers through speaker cables. I believe that most audiophiles still use this configuration at home, because friends who like passive speakers say that the sound is better than active speakers. OK, so why do they have this opinion? Is this point of view tenable?

After a certain period of time, editor-in-chief Bi believes that passive speakers have inherent advantages in theory, and the key lies in shock absorption and anti-interference. Everyone knows that when a speaker emits sound, it will vibrate obviously. This is a manifestation of the transformation of sound energy into mechanical energy. If it is an active speaker and the power amplifier is built in the box, it will vibrate along with the speaker, no matter how much the shock absorber is handled. Well, this phenomenon will not change. Passive speakers do not have this trouble, and the vibration of the speaker is difficult to affect the vibration of the power amplifier, so that the working efficiency of the power amplifier is higher and the sound performance is better. Secondly, the power amplifier is built in the speaker, the speaker unit is a strong magnet, and there are many wires around, the electromagnetic field is quite obvious. irresistible factor. Passive speakers do not have this problem, so although they are more cumbersome, they are still favored by the majority of audiophiles.